®
TOCOS
GF12Series
P O T E N T I O M E T E R S
12mm Square, Single-Turn,Through-Hole Sealed Cermet Trimmers
Features
12mm square, single-turn, through-hole, sealed cermet trimmers
Stable, infinite resolution cermet element
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Ⅲ
Unique 5,000 cycle rotational life
Meets UL 94V-0 flammability requirements
Top and side adjust models
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4 standard styles, single-slot flush rotor, 5mm or 10mm single-slot metal shaft, or 8.2mm knurled plastic shaft
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Sealed to withstand wave soldering and immersion cleaning
Optional 15, 20, 22, 25 or 30mm metal shafts available
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Specifications
Electrical
Environmental
Temperature Range . . . . . . . . . . . . . . . . .
55؇C to 125؇C
Standard Resistance Range . . . . . . . . . . . . . . 10Ω to 1MΩ
(standard 1, 2 & 5 sequence)
High Temperature Exposure . . . . . . . . . 125؇C, 250 hours
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ؓ
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ؓ
ؓ
ؓ
Resistance Tolerance . . . . . . . . . . . . . . . 10% and 20%
End Resistance . . . . . . . . . . 1% or 3Ω, whichever is greater
Resistance Taper . . . . . . . . . . . . . . . . . . . . . . . . . . . . Linear
Peak Noise (C.R.V.) . . . . . . 2% or 3Ω, whichever is greater
∆T/R
3%, S.S.
1%
Load Life . . . . . . . . . . . . . . . . 70؇C, 0.75 watt, 1,000 hours
)
ؓ
)
ؓ
∆T/R
3%, S.S.
1%
Thermal Shock . . . . . . . . . . . . . . . . . . . . . .
55؇C, 125؇C,
30 minutes each, 5 cycles
Power Rating . . . . . . . 0.75 watt at 70؇C, 0 watt at 125؇C
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ؓ
)
ؓ
∆T/R
2%, S.S.
1%
Maximum Input Voltage . . . . . . . . 300VDC or power rating,
Shock . . . . . . . . . . . . . 50G, 6ms, 6 directions, 3 times each
whichever is smaller
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ؓ
)
ؓ
∆T/R
1%, S.S.
1%
ؓ
Temperature Coefficient . . . 100ppm/؇C, 200Ω to 500kΩ
Vibration . . . . . . . . . . . . . . . . 10-2,000Hz, 1.5mm amplitude,
ؓ2
50ppm/؇C, other values
20G, 12 hours
)
ؓ
)
ؓ
∆T/R
1%, S.S.
1%
Insulation Resistance . . . . . . 100MΩ minimum at 500VDC
Dielectric Strength . . . . . . . . . . . . . . . . . 900VAC, 1 minute
Humidity . . . . . . . . . . . . . . . . . . . . . . . . 40؇C, 90-95%RH,
0.75 watt, 500 hours
ؓ
Adjustment Travel . . . . . . . . . . . . . . . . . . . . . . . . . 270؇ 10؇
)
)
ؓ
ؓ
∆T/R
3%, S.S.
1%
Moisture Resistance . . . . . . 10؇C to 65؇C, 80-98%RH,
Mechanical
0.75 watt, 10 cycles, 240 hours
)
ؓ
3%
ؓ
Mechanical Travel . . . . . . . . . . . . . . . . . . . . . . . . . 300؇ 10؇
∆T/R
•
•
Shaft Torque . . . . . . . . . . . . . . 300 gf cm (4.16 oz in) max.
Soldering Heat Resistance . . . . . . . . . . . 350؇C, 3 seconds
)
ؓ
1%
∆T/R
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•
Stop Strength . . . . . . . . . . . . . . 1 kgf cm (12.86 oz in) min.
Seal Test . . . . . . . . . . . . . . . . 85؇C, hot water for 1 minute
Flammability of Plastic Materials . . . . . . . Meets UL 94V-0
Rotational Life . . . . . . . . 5,000 cycles without discontinuity
Nominal Weight . . . . . . . . . . 1.4g (P); 1.8g (S, X, R) no shaft
1.8g (P); 2.2g (S, X, R) 5mm metal shaft
)
ؓ
∆T/R
5%)
∆T/R = Total Resistance Change; S.S. = Setting Stability (voltage ratio)
2.1g (P); 2.5g (S, X, R) 10mm metal shaft
1.7g (P); 2.1g (S, X, R) with knurled plastic shaft
Marking . . . . . . . . . Resistance code, date code, model type
TOCOSAMERICA,INC.
77
1177 East Tower Road, Schaumburg, IL 60173 Tel: 847-884-6664 Fax: 847-884-6665 E-mail: sales tocos.com www.tocos.com
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